./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:03:50,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:50,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:50,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:50,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:50,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:50,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:50,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:50,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:50,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:50,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:50,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:50,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:50,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:50,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:50,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:50,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:50,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:50,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:50,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:50,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:50,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:50,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:50,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:50,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:50,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:50,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:50,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:50,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:50,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:50,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:50,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:50,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:50,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:50,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:50,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:50,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:50,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:50,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:50,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:50,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:50,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:50,453 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:50,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:50,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:50,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:50,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:50,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:50,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:50,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:50,457 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:50,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:50,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:50,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:50,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:50,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:50,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:50,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:50,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:50,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:50,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:50,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:50,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:50,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:50,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:50,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:50,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:50,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:50,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:50,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:50,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:50,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:50,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:50,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:50,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:50,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-11-02 21:03:50,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:50,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:50,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:50,821 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:50,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:50,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-02 21:03:50,898 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/data/4cfa79338/7ad3e284bd9e4e8ab8ba6fb19a7d0ba0/FLAGbf9fee021 [2022-11-02 21:03:51,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:51,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-11-02 21:03:51,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/data/4cfa79338/7ad3e284bd9e4e8ab8ba6fb19a7d0ba0/FLAGbf9fee021 [2022-11-02 21:03:51,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/data/4cfa79338/7ad3e284bd9e4e8ab8ba6fb19a7d0ba0 [2022-11-02 21:03:51,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:51,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:51,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:51,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:51,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:51,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:51" (1/1) ... [2022-11-02 21:03:51,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474e8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:51, skipping insertion in model container [2022-11-02 21:03:51,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:51" (1/1) ... [2022-11-02 21:03:51,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:51,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:51,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-02 21:03:52,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:52,014 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:52,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-11-02 21:03:52,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:52,062 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:52,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52 WrapperNode [2022-11-02 21:03:52,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:52,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:52,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:52,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:52,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,137 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 198 [2022-11-02 21:03:52,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:52,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:52,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:52,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:52,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:52,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:52,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:52,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:52,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (1/1) ... [2022-11-02 21:03:52,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:52,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:52,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:03:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:03:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:03:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:03:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:03:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:03:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:03:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:03:52,303 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:03:52,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:52,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:52,842 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:52,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:52,853 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:03:52,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:52 BoogieIcfgContainer [2022-11-02 21:03:52,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:52,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:52,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:52,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:52,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:51" (1/3) ... [2022-11-02 21:03:52,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e83328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:52, skipping insertion in model container [2022-11-02 21:03:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:52" (2/3) ... [2022-11-02 21:03:52,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e83328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:52, skipping insertion in model container [2022-11-02 21:03:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:52" (3/3) ... [2022-11-02 21:03:52,872 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-11-02 21:03:52,881 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:03:52,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:52,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:52,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:03:53,015 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:03:53,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 258 transitions, 532 flow [2022-11-02 21:03:53,220 INFO L130 PetriNetUnfolder]: 21/256 cut-off events. [2022-11-02 21:03:53,220 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:03:53,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 21/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 347 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-11-02 21:03:53,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 258 transitions, 532 flow [2022-11-02 21:03:53,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 247 transitions, 506 flow [2022-11-02 21:03:53,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:53,269 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cc5fb0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:53,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 21:03:53,349 INFO L130 PetriNetUnfolder]: 21/246 cut-off events. [2022-11-02 21:03:53,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:03:53,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:53,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:53,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:53,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 83606904, now seen corresponding path program 1 times [2022-11-02 21:03:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:53,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115022971] [2022-11-02 21:03:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:53,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115022971] [2022-11-02 21:03:53,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115022971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:53,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:53,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:53,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406574483] [2022-11-02 21:03:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:03:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:03:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:03:53,820 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 258 [2022-11-02 21:03:53,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 247 transitions, 506 flow. Second operand has 2 states, 2 states have (on average 240.5) internal successors, (481), 2 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:53,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 258 [2022-11-02 21:03:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:53,885 INFO L130 PetriNetUnfolder]: 6/232 cut-off events. [2022-11-02 21:03:53,885 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:03:53,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 232 events. 6/232 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 17/232 useless extension candidates. Maximal degree in co-relation 157. Up to 5 conditions per place. [2022-11-02 21:03:53,889 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 4 selfloop transitions, 0 changer transitions 7/232 dead transitions. [2022-11-02 21:03:53,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 232 transitions, 484 flow [2022-11-02 21:03:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:03:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:03:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 495 transitions. [2022-11-02 21:03:53,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9593023255813954 [2022-11-02 21:03:53,906 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 495 transitions. [2022-11-02 21:03:53,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 495 transitions. [2022-11-02 21:03:53,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:53,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 495 transitions. [2022-11-02 21:03:53,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 247.5) internal successors, (495), 2 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,922 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,924 INFO L175 Difference]: Start difference. First operand has 233 places, 247 transitions, 506 flow. Second operand 2 states and 495 transitions. [2022-11-02 21:03:53,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 232 transitions, 484 flow [2022-11-02 21:03:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 232 transitions, 476 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:03:53,937 INFO L231 Difference]: Finished difference. Result has 230 places, 225 transitions, 454 flow [2022-11-02 21:03:53,939 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=454, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2022-11-02 21:03:53,945 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, -3 predicate places. [2022-11-02 21:03:53,946 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 454 flow [2022-11-02 21:03:53,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 240.5) internal successors, (481), 2 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:53,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:53,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:53,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -38155261, now seen corresponding path program 1 times [2022-11-02 21:03:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:53,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494972280] [2022-11-02 21:03:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:53,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:55,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494972280] [2022-11-02 21:03:55,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494972280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:55,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:55,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837969394] [2022-11-02 21:03:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:55,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 258 [2022-11-02 21:03:55,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 454 flow. Second operand has 20 states, 20 states have (on average 171.7) internal successors, (3434), 20 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:55,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:55,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 258 [2022-11-02 21:03:55,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:57,520 INFO L130 PetriNetUnfolder]: 144/1812 cut-off events. [2022-11-02 21:03:57,520 INFO L131 PetriNetUnfolder]: For 28/34 co-relation queries the response was YES. [2022-11-02 21:03:57,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 1812 events. 144/1812 cut-off events. For 28/34 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13698 event pairs, 57 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 2174. Up to 94 conditions per place. [2022-11-02 21:03:57,573 INFO L137 encePairwiseOnDemand]: 231/258 looper letters, 141 selfloop transitions, 27 changer transitions 12/339 dead transitions. [2022-11-02 21:03:57,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 339 transitions, 1055 flow [2022-11-02 21:03:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:03:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 21:03:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4237 transitions. [2022-11-02 21:03:57,588 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6842700258397932 [2022-11-02 21:03:57,589 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4237 transitions. [2022-11-02 21:03:57,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4237 transitions. [2022-11-02 21:03:57,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:57,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4237 transitions. [2022-11-02 21:03:57,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 176.54166666666666) internal successors, (4237), 24 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,627 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,628 INFO L175 Difference]: Start difference. First operand has 230 places, 225 transitions, 454 flow. Second operand 24 states and 4237 transitions. [2022-11-02 21:03:57,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 339 transitions, 1055 flow [2022-11-02 21:03:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 339 transitions, 1055 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:57,643 INFO L231 Difference]: Finished difference. Result has 258 places, 241 transitions, 602 flow [2022-11-02 21:03:57,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=602, PETRI_PLACES=258, PETRI_TRANSITIONS=241} [2022-11-02 21:03:57,644 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 25 predicate places. [2022-11-02 21:03:57,644 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 241 transitions, 602 flow [2022-11-02 21:03:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.7) internal successors, (3434), 20 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:57,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:57,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:57,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:57,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -980449047, now seen corresponding path program 2 times [2022-11-02 21:03:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:57,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625890718] [2022-11-02 21:03:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:57,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:58,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625890718] [2022-11-02 21:03:58,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625890718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:58,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:58,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362888511] [2022-11-02 21:03:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:58,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:58,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 258 [2022-11-02 21:03:58,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 241 transitions, 602 flow. Second operand has 20 states, 20 states have (on average 171.7) internal successors, (3434), 20 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:58,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 258 [2022-11-02 21:03:58,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:00,410 INFO L130 PetriNetUnfolder]: 140/1844 cut-off events. [2022-11-02 21:04:00,410 INFO L131 PetriNetUnfolder]: For 207/215 co-relation queries the response was YES. [2022-11-02 21:04:00,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2419 conditions, 1844 events. 140/1844 cut-off events. For 207/215 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13780 event pairs, 54 based on Foata normal form. 5/1688 useless extension candidates. Maximal degree in co-relation 2403. Up to 94 conditions per place. [2022-11-02 21:04:00,428 INFO L137 encePairwiseOnDemand]: 231/258 looper letters, 140 selfloop transitions, 29 changer transitions 12/340 dead transitions. [2022-11-02 21:04:00,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 340 transitions, 1224 flow [2022-11-02 21:04:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:04:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 21:04:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4236 transitions. [2022-11-02 21:04:00,467 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6841085271317829 [2022-11-02 21:04:00,467 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4236 transitions. [2022-11-02 21:04:00,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4236 transitions. [2022-11-02 21:04:00,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:00,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4236 transitions. [2022-11-02 21:04:00,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 176.5) internal successors, (4236), 24 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:00,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:00,499 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 258.0) internal successors, (6450), 25 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:00,500 INFO L175 Difference]: Start difference. First operand has 258 places, 241 transitions, 602 flow. Second operand 24 states and 4236 transitions. [2022-11-02 21:04:00,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 340 transitions, 1224 flow [2022-11-02 21:04:00,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 340 transitions, 1190 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-02 21:04:00,513 INFO L231 Difference]: Finished difference. Result has 275 places, 246 transitions, 695 flow [2022-11-02 21:04:00,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=695, PETRI_PLACES=275, PETRI_TRANSITIONS=246} [2022-11-02 21:04:00,517 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 42 predicate places. [2022-11-02 21:04:00,517 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 246 transitions, 695 flow [2022-11-02 21:04:00,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.7) internal successors, (3434), 20 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:00,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:00,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:00,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1619395327, now seen corresponding path program 1 times [2022-11-02 21:04:00,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:00,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065725418] [2022-11-02 21:04:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:01,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065725418] [2022-11-02 21:04:01,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065725418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:01,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515706654] [2022-11-02 21:04:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:01,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:01,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:04:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:01,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:04:01,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:01,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:02,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515706654] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:02,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:02,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-11-02 21:04:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589867215] [2022-11-02 21:04:02,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:02,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:04:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:04:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:04:02,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 258 [2022-11-02 21:04:02,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 246 transitions, 695 flow. Second operand has 14 states, 14 states have (on average 173.14285714285714) internal successors, (2424), 14 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:02,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:02,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 258 [2022-11-02 21:04:02,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:03,436 INFO L130 PetriNetUnfolder]: 187/2412 cut-off events. [2022-11-02 21:04:03,436 INFO L131 PetriNetUnfolder]: For 612/634 co-relation queries the response was YES. [2022-11-02 21:04:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 2412 events. 187/2412 cut-off events. For 612/634 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19995 event pairs, 83 based on Foata normal form. 3/2196 useless extension candidates. Maximal degree in co-relation 3275. Up to 223 conditions per place. [2022-11-02 21:04:03,459 INFO L137 encePairwiseOnDemand]: 239/258 looper letters, 149 selfloop transitions, 25 changer transitions 8/341 dead transitions. [2022-11-02 21:04:03,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 341 transitions, 1339 flow [2022-11-02 21:04:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:04:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:04:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3212 transitions. [2022-11-02 21:04:03,467 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6916451335055986 [2022-11-02 21:04:03,467 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3212 transitions. [2022-11-02 21:04:03,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3212 transitions. [2022-11-02 21:04:03,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:03,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3212 transitions. [2022-11-02 21:04:03,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 178.44444444444446) internal successors, (3212), 18 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,487 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,487 INFO L175 Difference]: Start difference. First operand has 275 places, 246 transitions, 695 flow. Second operand 18 states and 3212 transitions. [2022-11-02 21:04:03,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 341 transitions, 1339 flow [2022-11-02 21:04:03,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 341 transitions, 1278 flow, removed 9 selfloop flow, removed 20 redundant places. [2022-11-02 21:04:03,537 INFO L231 Difference]: Finished difference. Result has 275 places, 257 transitions, 777 flow [2022-11-02 21:04:03,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=777, PETRI_PLACES=275, PETRI_TRANSITIONS=257} [2022-11-02 21:04:03,539 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 42 predicate places. [2022-11-02 21:04:03,539 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 257 transitions, 777 flow [2022-11-02 21:04:03,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 173.14285714285714) internal successors, (2424), 14 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:03,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:03,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:03,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:03,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1111966459, now seen corresponding path program 2 times [2022-11-02 21:04:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:03,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017583202] [2022-11-02 21:04:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:04,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017583202] [2022-11-02 21:04:04,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017583202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:04,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731668439] [2022-11-02 21:04:04,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:04,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:04,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:04,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:04:04,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:04:04,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:04,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:04:04,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:04,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:04,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731668439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:04,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:04,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2022-11-02 21:04:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864888336] [2022-11-02 21:04:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:04,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:04:04,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:04:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:04:04,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 258 [2022-11-02 21:04:04,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 257 transitions, 777 flow. Second operand has 12 states, 12 states have (on average 190.66666666666666) internal successors, (2288), 12 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:04,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:04,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 258 [2022-11-02 21:04:04,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:05,924 INFO L130 PetriNetUnfolder]: 221/3054 cut-off events. [2022-11-02 21:04:05,924 INFO L131 PetriNetUnfolder]: For 1315/1365 co-relation queries the response was YES. [2022-11-02 21:04:05,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 3054 events. 221/3054 cut-off events. For 1315/1365 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26681 event pairs, 30 based on Foata normal form. 15/2795 useless extension candidates. Maximal degree in co-relation 4262. Up to 234 conditions per place. [2022-11-02 21:04:05,950 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 79 selfloop transitions, 16 changer transitions 12/297 dead transitions. [2022-11-02 21:04:05,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 297 transitions, 1146 flow [2022-11-02 21:04:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:04:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2705 transitions. [2022-11-02 21:04:05,956 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7488925802879292 [2022-11-02 21:04:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2705 transitions. [2022-11-02 21:04:05,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2705 transitions. [2022-11-02 21:04:05,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:05,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2705 transitions. [2022-11-02 21:04:05,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 193.21428571428572) internal successors, (2705), 14 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:05,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:05,972 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:05,973 INFO L175 Difference]: Start difference. First operand has 275 places, 257 transitions, 777 flow. Second operand 14 states and 2705 transitions. [2022-11-02 21:04:05,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 297 transitions, 1146 flow [2022-11-02 21:04:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 297 transitions, 1085 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-11-02 21:04:05,991 INFO L231 Difference]: Finished difference. Result has 289 places, 262 transitions, 858 flow [2022-11-02 21:04:05,991 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=858, PETRI_PLACES=289, PETRI_TRANSITIONS=262} [2022-11-02 21:04:05,994 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 56 predicate places. [2022-11-02 21:04:05,994 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 262 transitions, 858 flow [2022-11-02 21:04:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.66666666666666) internal successors, (2288), 12 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:05,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:05,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:06,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:06,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:06,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1904163694, now seen corresponding path program 1 times [2022-11-02 21:04:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:06,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002153457] [2022-11-02 21:04:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:06,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:06,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002153457] [2022-11-02 21:04:06,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002153457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620106094] [2022-11-02 21:04:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:06,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:06,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:04:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:04:06,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:07,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620106094] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-11-02 21:04:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751852720] [2022-11-02 21:04:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:04:07,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:04:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:04:07,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 258 [2022-11-02 21:04:07,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 262 transitions, 858 flow. Second operand has 14 states, 14 states have (on average 173.14285714285714) internal successors, (2424), 14 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:07,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:07,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 258 [2022-11-02 21:04:07,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:08,922 INFO L130 PetriNetUnfolder]: 223/3065 cut-off events. [2022-11-02 21:04:08,922 INFO L131 PetriNetUnfolder]: For 2032/2102 co-relation queries the response was YES. [2022-11-02 21:04:08,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 3065 events. 223/3065 cut-off events. For 2032/2102 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 26692 event pairs, 91 based on Foata normal form. 7/2789 useless extension candidates. Maximal degree in co-relation 4521. Up to 258 conditions per place. [2022-11-02 21:04:08,959 INFO L137 encePairwiseOnDemand]: 236/258 looper letters, 154 selfloop transitions, 29 changer transitions 4/346 dead transitions. [2022-11-02 21:04:08,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 346 transitions, 1599 flow [2022-11-02 21:04:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:04:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 21:04:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3546 transitions. [2022-11-02 21:04:08,968 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6872093023255814 [2022-11-02 21:04:08,969 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3546 transitions. [2022-11-02 21:04:08,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3546 transitions. [2022-11-02 21:04:08,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:08,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3546 transitions. [2022-11-02 21:04:09,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 177.3) internal successors, (3546), 20 states have internal predecessors, (3546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:09,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 258.0) internal successors, (5418), 21 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:09,057 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 258.0) internal successors, (5418), 21 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:09,057 INFO L175 Difference]: Start difference. First operand has 289 places, 262 transitions, 858 flow. Second operand 20 states and 3546 transitions. [2022-11-02 21:04:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 346 transitions, 1599 flow [2022-11-02 21:04:09,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 346 transitions, 1476 flow, removed 54 selfloop flow, removed 11 redundant places. [2022-11-02 21:04:09,072 INFO L231 Difference]: Finished difference. Result has 293 places, 270 transitions, 995 flow [2022-11-02 21:04:09,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=995, PETRI_PLACES=293, PETRI_TRANSITIONS=270} [2022-11-02 21:04:09,075 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 60 predicate places. [2022-11-02 21:04:09,076 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 270 transitions, 995 flow [2022-11-02 21:04:09,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 173.14285714285714) internal successors, (2424), 14 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:09,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:09,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:09,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:04:09,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1602370668, now seen corresponding path program 1 times [2022-11-02 21:04:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:09,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449360506] [2022-11-02 21:04:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:09,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:09,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449360506] [2022-11-02 21:04:09,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449360506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820961731] [2022-11-02 21:04:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:09,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:09,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:09,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:04:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:09,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:04:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:10,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:10,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820961731] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:10,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:10,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-11-02 21:04:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828382506] [2022-11-02 21:04:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:04:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:04:10,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:04:10,628 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 258 [2022-11-02 21:04:10,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 270 transitions, 995 flow. Second operand has 11 states, 11 states have (on average 200.36363636363637) internal successors, (2204), 11 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:10,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:10,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 258 [2022-11-02 21:04:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:11,889 INFO L130 PetriNetUnfolder]: 402/3869 cut-off events. [2022-11-02 21:04:11,889 INFO L131 PetriNetUnfolder]: For 2023/2031 co-relation queries the response was YES. [2022-11-02 21:04:11,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5664 conditions, 3869 events. 402/3869 cut-off events. For 2023/2031 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 36085 event pairs, 135 based on Foata normal form. 3/3514 useless extension candidates. Maximal degree in co-relation 5637. Up to 234 conditions per place. [2022-11-02 21:04:11,935 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 106 selfloop transitions, 22 changer transitions 0/326 dead transitions. [2022-11-02 21:04:11,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 326 transitions, 1451 flow [2022-11-02 21:04:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:04:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:04:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3658 transitions. [2022-11-02 21:04:11,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7876830318690784 [2022-11-02 21:04:11,944 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3658 transitions. [2022-11-02 21:04:11,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3658 transitions. [2022-11-02 21:04:11,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:11,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3658 transitions. [2022-11-02 21:04:11,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 203.22222222222223) internal successors, (3658), 18 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:11,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:11,965 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:11,965 INFO L175 Difference]: Start difference. First operand has 293 places, 270 transitions, 995 flow. Second operand 18 states and 3658 transitions. [2022-11-02 21:04:11,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 326 transitions, 1451 flow [2022-11-02 21:04:11,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 326 transitions, 1386 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-02 21:04:11,985 INFO L231 Difference]: Finished difference. Result has 301 places, 276 transitions, 1003 flow [2022-11-02 21:04:11,985 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1003, PETRI_PLACES=301, PETRI_TRANSITIONS=276} [2022-11-02 21:04:11,986 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 68 predicate places. [2022-11-02 21:04:11,986 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 276 transitions, 1003 flow [2022-11-02 21:04:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.36363636363637) internal successors, (2204), 11 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:11,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:11,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:12,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:12,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1108619878, now seen corresponding path program 1 times [2022-11-02 21:04:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:12,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170136624] [2022-11-02 21:04:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:12,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170136624] [2022-11-02 21:04:12,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170136624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:12,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213314706] [2022-11-02 21:04:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:12,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:12,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:12,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:12,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:04:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:12,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:04:12,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:12,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:13,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213314706] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:13,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:13,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-11-02 21:04:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583570484] [2022-11-02 21:04:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:04:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:04:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:04:13,428 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 258 [2022-11-02 21:04:13,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 276 transitions, 1003 flow. Second operand has 11 states, 11 states have (on average 200.45454545454547) internal successors, (2205), 11 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:13,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 258 [2022-11-02 21:04:13,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:14,641 INFO L130 PetriNetUnfolder]: 376/4097 cut-off events. [2022-11-02 21:04:14,641 INFO L131 PetriNetUnfolder]: For 2160/2168 co-relation queries the response was YES. [2022-11-02 21:04:14,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6114 conditions, 4097 events. 376/4097 cut-off events. For 2160/2168 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 39346 event pairs, 123 based on Foata normal form. 6/3817 useless extension candidates. Maximal degree in co-relation 6086. Up to 202 conditions per place. [2022-11-02 21:04:14,686 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 112 selfloop transitions, 22 changer transitions 0/335 dead transitions. [2022-11-02 21:04:14,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 335 transitions, 1518 flow [2022-11-02 21:04:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:04:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:04:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3661 transitions. [2022-11-02 21:04:14,693 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7883290267011197 [2022-11-02 21:04:14,693 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3661 transitions. [2022-11-02 21:04:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3661 transitions. [2022-11-02 21:04:14,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:14,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3661 transitions. [2022-11-02 21:04:14,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 203.38888888888889) internal successors, (3661), 18 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:14,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:14,714 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 258.0) internal successors, (4902), 19 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:14,714 INFO L175 Difference]: Start difference. First operand has 301 places, 276 transitions, 1003 flow. Second operand 18 states and 3661 transitions. [2022-11-02 21:04:14,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 335 transitions, 1518 flow [2022-11-02 21:04:14,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 335 transitions, 1493 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-02 21:04:14,730 INFO L231 Difference]: Finished difference. Result has 310 places, 282 transitions, 1047 flow [2022-11-02 21:04:14,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1047, PETRI_PLACES=310, PETRI_TRANSITIONS=282} [2022-11-02 21:04:14,733 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 77 predicate places. [2022-11-02 21:04:14,733 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 282 transitions, 1047 flow [2022-11-02 21:04:14,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.45454545454547) internal successors, (2205), 11 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:14,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:14,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:14,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:14,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash 293929978, now seen corresponding path program 1 times [2022-11-02 21:04:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:14,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281737842] [2022-11-02 21:04:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:15,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:15,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281737842] [2022-11-02 21:04:15,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281737842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109723521] [2022-11-02 21:04:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:15,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:15,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:15,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:15,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:04:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:04:15,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:17,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:18,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109723521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:18,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:18,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-11-02 21:04:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946100818] [2022-11-02 21:04:18,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:18,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 21:04:18,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:18,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 21:04:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 21:04:18,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 258 [2022-11-02 21:04:18,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 282 transitions, 1047 flow. Second operand has 43 states, 43 states have (on average 170.09302325581396) internal successors, (7314), 43 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:18,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 258 [2022-11-02 21:04:18,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:21,807 INFO L130 PetriNetUnfolder]: 396/5497 cut-off events. [2022-11-02 21:04:21,807 INFO L131 PetriNetUnfolder]: For 3769/3873 co-relation queries the response was YES. [2022-11-02 21:04:21,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8530 conditions, 5497 events. 396/5497 cut-off events. For 3769/3873 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 55652 event pairs, 176 based on Foata normal form. 16/5147 useless extension candidates. Maximal degree in co-relation 8500. Up to 580 conditions per place. [2022-11-02 21:04:21,880 INFO L137 encePairwiseOnDemand]: 234/258 looper letters, 223 selfloop transitions, 49 changer transitions 12/447 dead transitions. [2022-11-02 21:04:21,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 447 transitions, 2392 flow [2022-11-02 21:04:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:04:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:04:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5732 transitions. [2022-11-02 21:04:21,888 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6732440685929058 [2022-11-02 21:04:21,889 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5732 transitions. [2022-11-02 21:04:21,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5732 transitions. [2022-11-02 21:04:21,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:21,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5732 transitions. [2022-11-02 21:04:21,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 173.6969696969697) internal successors, (5732), 33 states have internal predecessors, (5732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 258.0) internal successors, (8772), 34 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,990 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 258.0) internal successors, (8772), 34 states have internal predecessors, (8772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,990 INFO L175 Difference]: Start difference. First operand has 310 places, 282 transitions, 1047 flow. Second operand 33 states and 5732 transitions. [2022-11-02 21:04:21,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 447 transitions, 2392 flow [2022-11-02 21:04:22,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 447 transitions, 2358 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-02 21:04:22,013 INFO L231 Difference]: Finished difference. Result has 343 places, 309 transitions, 1399 flow [2022-11-02 21:04:22,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1399, PETRI_PLACES=343, PETRI_TRANSITIONS=309} [2022-11-02 21:04:22,015 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 110 predicate places. [2022-11-02 21:04:22,015 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 309 transitions, 1399 flow [2022-11-02 21:04:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 170.09302325581396) internal successors, (7314), 43 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:22,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:22,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:22,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 21:04:22,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -920050577, now seen corresponding path program 1 times [2022-11-02 21:04:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:22,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901628503] [2022-11-02 21:04:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901628503] [2022-11-02 21:04:22,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901628503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:22,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086324430] [2022-11-02 21:04:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:22,411 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 258 [2022-11-02 21:04:22,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 309 transitions, 1399 flow. Second operand has 7 states, 7 states have (on average 203.42857142857142) internal successors, (1424), 7 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:22,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 258 [2022-11-02 21:04:22,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:23,879 INFO L130 PetriNetUnfolder]: 582/6515 cut-off events. [2022-11-02 21:04:23,880 INFO L131 PetriNetUnfolder]: For 5371/5405 co-relation queries the response was YES. [2022-11-02 21:04:23,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 6515 events. 582/6515 cut-off events. For 5371/5405 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 69792 event pairs, 341 based on Foata normal form. 32/6127 useless extension candidates. Maximal degree in co-relation 10304. Up to 986 conditions per place. [2022-11-02 21:04:23,947 INFO L137 encePairwiseOnDemand]: 247/258 looper letters, 100 selfloop transitions, 14 changer transitions 2/321 dead transitions. [2022-11-02 21:04:23,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 321 transitions, 1662 flow [2022-11-02 21:04:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:04:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2065 transitions. [2022-11-02 21:04:23,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8003875968992248 [2022-11-02 21:04:23,951 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2065 transitions. [2022-11-02 21:04:23,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2065 transitions. [2022-11-02 21:04:23,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:23,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2065 transitions. [2022-11-02 21:04:23,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.5) internal successors, (2065), 10 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,961 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,961 INFO L175 Difference]: Start difference. First operand has 343 places, 309 transitions, 1399 flow. Second operand 10 states and 2065 transitions. [2022-11-02 21:04:23,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 321 transitions, 1662 flow [2022-11-02 21:04:23,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 321 transitions, 1558 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-11-02 21:04:23,992 INFO L231 Difference]: Finished difference. Result has 339 places, 304 transitions, 1289 flow [2022-11-02 21:04:23,993 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1289, PETRI_PLACES=339, PETRI_TRANSITIONS=304} [2022-11-02 21:04:23,994 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 106 predicate places. [2022-11-02 21:04:23,994 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 304 transitions, 1289 flow [2022-11-02 21:04:23,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.42857142857142) internal successors, (1424), 7 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:23,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:04:23,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1271241303, now seen corresponding path program 1 times [2022-11-02 21:04:23,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984549025] [2022-11-02 21:04:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:24,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984549025] [2022-11-02 21:04:24,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984549025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:24,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:24,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505181324] [2022-11-02 21:04:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:24,142 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 258 [2022-11-02 21:04:24,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 304 transitions, 1289 flow. Second operand has 7 states, 7 states have (on average 203.42857142857142) internal successors, (1424), 7 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:24,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:24,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 258 [2022-11-02 21:04:24,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:25,493 INFO L130 PetriNetUnfolder]: 597/5064 cut-off events. [2022-11-02 21:04:25,493 INFO L131 PetriNetUnfolder]: For 3569/3600 co-relation queries the response was YES. [2022-11-02 21:04:25,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 5064 events. 597/5064 cut-off events. For 3569/3600 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 49218 event pairs, 399 based on Foata normal form. 35/4747 useless extension candidates. Maximal degree in co-relation 8357. Up to 1127 conditions per place. [2022-11-02 21:04:25,524 INFO L137 encePairwiseOnDemand]: 247/258 looper letters, 69 selfloop transitions, 10 changer transitions 38/313 dead transitions. [2022-11-02 21:04:25,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 313 transitions, 1534 flow [2022-11-02 21:04:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:04:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:04:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2063 transitions. [2022-11-02 21:04:25,527 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7996124031007752 [2022-11-02 21:04:25,528 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2063 transitions. [2022-11-02 21:04:25,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2063 transitions. [2022-11-02 21:04:25,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:25,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2063 transitions. [2022-11-02 21:04:25,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.3) internal successors, (2063), 10 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,536 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 258.0) internal successors, (2838), 11 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,536 INFO L175 Difference]: Start difference. First operand has 339 places, 304 transitions, 1289 flow. Second operand 10 states and 2063 transitions. [2022-11-02 21:04:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 313 transitions, 1534 flow [2022-11-02 21:04:25,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 313 transitions, 1492 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-11-02 21:04:25,558 INFO L231 Difference]: Finished difference. Result has 340 places, 274 transitions, 1025 flow [2022-11-02 21:04:25,559 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1025, PETRI_PLACES=340, PETRI_TRANSITIONS=274} [2022-11-02 21:04:25,560 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 107 predicate places. [2022-11-02 21:04:25,560 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 274 transitions, 1025 flow [2022-11-02 21:04:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.42857142857142) internal successors, (1424), 7 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:25,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:25,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:04:25,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1329761704, now seen corresponding path program 2 times [2022-11-02 21:04:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:25,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074432492] [2022-11-02 21:04:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:26,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074432492] [2022-11-02 21:04:26,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074432492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951411023] [2022-11-02 21:04:26,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:26,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:26,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:26,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:26,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:04:26,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:04:26,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:26,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:04:26,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:04:26,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:26,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951411023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:26,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:26,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-11-02 21:04:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518027872] [2022-11-02 21:04:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:04:26,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:04:26,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:04:26,848 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 258 [2022-11-02 21:04:26,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 274 transitions, 1025 flow. Second operand has 12 states, 12 states have (on average 190.83333333333334) internal successors, (2290), 12 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:26,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 258 [2022-11-02 21:04:26,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:28,065 INFO L130 PetriNetUnfolder]: 289/3868 cut-off events. [2022-11-02 21:04:28,065 INFO L131 PetriNetUnfolder]: For 2873/2972 co-relation queries the response was YES. [2022-11-02 21:04:28,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6138 conditions, 3868 events. 289/3868 cut-off events. For 2873/2972 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 35520 event pairs, 30 based on Foata normal form. 33/3649 useless extension candidates. Maximal degree in co-relation 6097. Up to 338 conditions per place. [2022-11-02 21:04:28,097 INFO L137 encePairwiseOnDemand]: 243/258 looper letters, 79 selfloop transitions, 21 changer transitions 12/316 dead transitions. [2022-11-02 21:04:28,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 1419 flow [2022-11-02 21:04:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 21:04:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2704 transitions. [2022-11-02 21:04:28,102 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7486157253599114 [2022-11-02 21:04:28,103 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2704 transitions. [2022-11-02 21:04:28,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2704 transitions. [2022-11-02 21:04:28,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:28,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2704 transitions. [2022-11-02 21:04:28,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 193.14285714285714) internal successors, (2704), 14 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,196 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 258.0) internal successors, (3870), 15 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,196 INFO L175 Difference]: Start difference. First operand has 340 places, 274 transitions, 1025 flow. Second operand 14 states and 2704 transitions. [2022-11-02 21:04:28,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 1419 flow [2022-11-02 21:04:28,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 316 transitions, 1296 flow, removed 32 selfloop flow, removed 23 redundant places. [2022-11-02 21:04:28,226 INFO L231 Difference]: Finished difference. Result has 315 places, 277 transitions, 1043 flow [2022-11-02 21:04:28,227 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1043, PETRI_PLACES=315, PETRI_TRANSITIONS=277} [2022-11-02 21:04:28,228 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 82 predicate places. [2022-11-02 21:04:28,228 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 277 transitions, 1043 flow [2022-11-02 21:04:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.83333333333334) internal successors, (2290), 12 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:28,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:28,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:28,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash 408299937, now seen corresponding path program 1 times [2022-11-02 21:04:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:28,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503123779] [2022-11-02 21:04:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:28,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:28,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503123779] [2022-11-02 21:04:28,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503123779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:28,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:28,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:28,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448031922] [2022-11-02 21:04:28,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:28,635 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 258 [2022-11-02 21:04:28,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 277 transitions, 1043 flow. Second operand has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:28,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:28,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 258 [2022-11-02 21:04:28,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:29,498 INFO L130 PetriNetUnfolder]: 404/4262 cut-off events. [2022-11-02 21:04:29,498 INFO L131 PetriNetUnfolder]: For 2953/3002 co-relation queries the response was YES. [2022-11-02 21:04:29,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 4262 events. 404/4262 cut-off events. For 2953/3002 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 40758 event pairs, 223 based on Foata normal form. 39/4013 useless extension candidates. Maximal degree in co-relation 6830. Up to 649 conditions per place. [2022-11-02 21:04:29,540 INFO L137 encePairwiseOnDemand]: 249/258 looper letters, 76 selfloop transitions, 13 changer transitions 2/288 dead transitions. [2022-11-02 21:04:29,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 288 transitions, 1270 flow [2022-11-02 21:04:29,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:04:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:04:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1655 transitions. [2022-11-02 21:04:29,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8018410852713178 [2022-11-02 21:04:29,545 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1655 transitions. [2022-11-02 21:04:29,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1655 transitions. [2022-11-02 21:04:29,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:29,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1655 transitions. [2022-11-02 21:04:29,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 206.875) internal successors, (1655), 8 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 258.0) internal successors, (2322), 9 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,555 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 258.0) internal successors, (2322), 9 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,555 INFO L175 Difference]: Start difference. First operand has 315 places, 277 transitions, 1043 flow. Second operand 8 states and 1655 transitions. [2022-11-02 21:04:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 288 transitions, 1270 flow [2022-11-02 21:04:29,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 288 transitions, 1204 flow, removed 23 selfloop flow, removed 12 redundant places. [2022-11-02 21:04:29,576 INFO L231 Difference]: Finished difference. Result has 300 places, 275 transitions, 999 flow [2022-11-02 21:04:29,577 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=300, PETRI_TRANSITIONS=275} [2022-11-02 21:04:29,577 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 67 predicate places. [2022-11-02 21:04:29,578 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 275 transitions, 999 flow [2022-11-02 21:04:29,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:29,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:29,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:04:29,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -465683437, now seen corresponding path program 1 times [2022-11-02 21:04:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:29,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301477595] [2022-11-02 21:04:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:29,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:29,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301477595] [2022-11-02 21:04:29,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301477595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:29,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:29,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145693899] [2022-11-02 21:04:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:29,756 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 258 [2022-11-02 21:04:29,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 275 transitions, 999 flow. Second operand has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:29,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 258 [2022-11-02 21:04:29,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:30,439 INFO L130 PetriNetUnfolder]: 398/3387 cut-off events. [2022-11-02 21:04:30,439 INFO L131 PetriNetUnfolder]: For 2178/2197 co-relation queries the response was YES. [2022-11-02 21:04:30,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5617 conditions, 3387 events. 398/3387 cut-off events. For 2178/2197 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 29546 event pairs, 241 based on Foata normal form. 30/3164 useless extension candidates. Maximal degree in co-relation 5587. Up to 724 conditions per place. [2022-11-02 21:04:30,482 INFO L137 encePairwiseOnDemand]: 249/258 looper letters, 63 selfloop transitions, 10 changer transitions 17/282 dead transitions. [2022-11-02 21:04:30,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 282 transitions, 1192 flow [2022-11-02 21:04:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:04:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 21:04:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1653 transitions. [2022-11-02 21:04:30,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8008720930232558 [2022-11-02 21:04:30,485 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1653 transitions. [2022-11-02 21:04:30,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1653 transitions. [2022-11-02 21:04:30,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:30,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1653 transitions. [2022-11-02 21:04:30,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 206.625) internal successors, (1653), 8 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 258.0) internal successors, (2322), 9 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,495 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 258.0) internal successors, (2322), 9 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,495 INFO L175 Difference]: Start difference. First operand has 300 places, 275 transitions, 999 flow. Second operand 8 states and 1653 transitions. [2022-11-02 21:04:30,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 282 transitions, 1192 flow [2022-11-02 21:04:30,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 282 transitions, 1154 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-02 21:04:30,509 INFO L231 Difference]: Finished difference. Result has 301 places, 263 transitions, 888 flow [2022-11-02 21:04:30,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=301, PETRI_TRANSITIONS=263} [2022-11-02 21:04:30,511 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 68 predicate places. [2022-11-02 21:04:30,511 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 263 transitions, 888 flow [2022-11-02 21:04:30,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:30,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:30,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:30,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:04:30,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1705634450, now seen corresponding path program 1 times [2022-11-02 21:04:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:30,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151841304] [2022-11-02 21:04:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:31,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:31,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151841304] [2022-11-02 21:04:31,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151841304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:31,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:31,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:04:31,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161482605] [2022-11-02 21:04:31,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:04:31,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:31,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:04:31,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:04:31,509 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 258 [2022-11-02 21:04:31,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 263 transitions, 888 flow. Second operand has 20 states, 20 states have (on average 181.6) internal successors, (3632), 20 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:31,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:31,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 258 [2022-11-02 21:04:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:38,452 INFO L130 PetriNetUnfolder]: 10589/37010 cut-off events. [2022-11-02 21:04:38,452 INFO L131 PetriNetUnfolder]: For 12303/12327 co-relation queries the response was YES. [2022-11-02 21:04:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63314 conditions, 37010 events. 10589/37010 cut-off events. For 12303/12327 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 481776 event pairs, 4993 based on Foata normal form. 7/34606 useless extension candidates. Maximal degree in co-relation 63285. Up to 7885 conditions per place. [2022-11-02 21:04:38,879 INFO L137 encePairwiseOnDemand]: 229/258 looper letters, 189 selfloop transitions, 39 changer transitions 0/425 dead transitions. [2022-11-02 21:04:38,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 425 transitions, 1769 flow [2022-11-02 21:04:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:04:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:04:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3982 transitions. [2022-11-02 21:04:38,885 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7349575489110373 [2022-11-02 21:04:38,885 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3982 transitions. [2022-11-02 21:04:38,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3982 transitions. [2022-11-02 21:04:38,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:38,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3982 transitions. [2022-11-02 21:04:38,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 189.61904761904762) internal successors, (3982), 21 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,903 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,903 INFO L175 Difference]: Start difference. First operand has 301 places, 263 transitions, 888 flow. Second operand 21 states and 3982 transitions. [2022-11-02 21:04:38,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 425 transitions, 1769 flow [2022-11-02 21:04:38,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 425 transitions, 1684 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-11-02 21:04:38,997 INFO L231 Difference]: Finished difference. Result has 313 places, 286 transitions, 1032 flow [2022-11-02 21:04:38,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1032, PETRI_PLACES=313, PETRI_TRANSITIONS=286} [2022-11-02 21:04:38,998 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 80 predicate places. [2022-11-02 21:04:38,999 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 286 transitions, 1032 flow [2022-11-02 21:04:38,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 181.6) internal successors, (3632), 20 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:38,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:38,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:04:39,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1305049548, now seen corresponding path program 1 times [2022-11-02 21:04:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:39,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649471449] [2022-11-02 21:04:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:40,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:40,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649471449] [2022-11-02 21:04:40,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649471449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:40,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:40,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:04:40,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213247732] [2022-11-02 21:04:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:40,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:04:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:40,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:04:40,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:04:40,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 258 [2022-11-02 21:04:40,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 286 transitions, 1032 flow. Second operand has 20 states, 20 states have (on average 181.6) internal successors, (3632), 20 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:40,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:40,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 258 [2022-11-02 21:04:40,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:53,058 INFO L130 PetriNetUnfolder]: 18522/63997 cut-off events. [2022-11-02 21:04:53,058 INFO L131 PetriNetUnfolder]: For 28843/28914 co-relation queries the response was YES. [2022-11-02 21:04:53,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121082 conditions, 63997 events. 18522/63997 cut-off events. For 28843/28914 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 894227 event pairs, 8931 based on Foata normal form. 52/61569 useless extension candidates. Maximal degree in co-relation 121047. Up to 15781 conditions per place. [2022-11-02 21:04:54,019 INFO L137 encePairwiseOnDemand]: 230/258 looper letters, 230 selfloop transitions, 43 changer transitions 0/470 dead transitions. [2022-11-02 21:04:54,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 470 transitions, 2310 flow [2022-11-02 21:04:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:04:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:04:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3967 transitions. [2022-11-02 21:04:54,028 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7321889996308601 [2022-11-02 21:04:54,028 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3967 transitions. [2022-11-02 21:04:54,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3967 transitions. [2022-11-02 21:04:54,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:04:54,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3967 transitions. [2022-11-02 21:04:54,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 188.9047619047619) internal successors, (3967), 21 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,044 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 258.0) internal successors, (5676), 22 states have internal predecessors, (5676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,044 INFO L175 Difference]: Start difference. First operand has 313 places, 286 transitions, 1032 flow. Second operand 21 states and 3967 transitions. [2022-11-02 21:04:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 470 transitions, 2310 flow [2022-11-02 21:04:54,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 470 transitions, 2283 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 21:04:54,266 INFO L231 Difference]: Finished difference. Result has 336 places, 303 transitions, 1268 flow [2022-11-02 21:04:54,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1268, PETRI_PLACES=336, PETRI_TRANSITIONS=303} [2022-11-02 21:04:54,267 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 103 predicate places. [2022-11-02 21:04:54,267 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 303 transitions, 1268 flow [2022-11-02 21:04:54,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 181.6) internal successors, (3632), 20 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:04:54,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:54,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:04:54,269 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:04:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1035487944, now seen corresponding path program 2 times [2022-11-02 21:04:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:54,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506994405] [2022-11-02 21:04:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:55,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:55,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506994405] [2022-11-02 21:04:55,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506994405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:55,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979663779] [2022-11-02 21:04:55,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:55,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:55,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:04:55,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:55,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:55,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-02 21:04:55,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:56,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:04:56,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:04:56,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:04:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:57,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:57,559 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_372 (Array Int Int)) (~a1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_372))) (let ((.cse0 (select .cse3 c_~a2~0.base)) (.cse1 (select .cse3 ~a1~0.base))) (or (not (= (select .cse0 c_~a2~0.offset) (select .cse1 c_~a1~0.offset))) (let ((.cse2 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (= (select .cse0 (+ .cse2 c_~a2~0.offset)) (select .cse1 (+ .cse2 c_~a1~0.offset)))))))) is different from false [2022-11-02 21:04:57,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:57,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979663779] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:57,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:57,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20, 24] total 46 [2022-11-02 21:04:57,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943608573] [2022-11-02 21:04:57,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:57,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:04:57,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:04:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1777, Unknown=1, NotChecked=86, Total=2070 [2022-11-02 21:04:57,613 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 258 [2022-11-02 21:04:57,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 303 transitions, 1268 flow. Second operand has 10 states, 10 states have (on average 195.7) internal successors, (1957), 10 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:04:57,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 258 [2022-11-02 21:04:57,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:04:57,939 WARN L833 $PredicateComparison]: unable to prove that (and (or (= |c_thread1Thread1of1ForFork1_#t~mem2#1| |c_thread1Thread1of1ForFork1_#t~mem1#1|) (not (= |c_thread2Thread1of1ForFork0_#t~mem8#1| |c_thread2Thread1of1ForFork0_#t~mem7#1|))) (forall ((v_ArrVal_372 (Array Int Int)) (~a1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_372))) (let ((.cse0 (select .cse3 c_~a2~0.base)) (.cse1 (select .cse3 ~a1~0.base))) (or (not (= (select .cse0 c_~a2~0.offset) (select .cse1 c_~a1~0.offset))) (let ((.cse2 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (= (select .cse0 (+ .cse2 c_~a2~0.offset)) (select .cse1 (+ .cse2 c_~a1~0.offset))))))))) is different from false [2022-11-02 21:05:14,038 INFO L130 PetriNetUnfolder]: 22171/75132 cut-off events. [2022-11-02 21:05:14,038 INFO L131 PetriNetUnfolder]: For 70266/70351 co-relation queries the response was YES. [2022-11-02 21:05:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161799 conditions, 75132 events. 22171/75132 cut-off events. For 70266/70351 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 1057676 event pairs, 13899 based on Foata normal form. 86/72519 useless extension candidates. Maximal degree in co-relation 161753. Up to 32031 conditions per place. [2022-11-02 21:05:15,105 INFO L137 encePairwiseOnDemand]: 230/258 looper letters, 141 selfloop transitions, 123 changer transitions 0/477 dead transitions. [2022-11-02 21:05:15,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 477 transitions, 2780 flow [2022-11-02 21:05:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:05:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:05:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3247 transitions. [2022-11-02 21:05:15,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7865794573643411 [2022-11-02 21:05:15,110 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3247 transitions. [2022-11-02 21:05:15,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3247 transitions. [2022-11-02 21:05:15,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:05:15,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3247 transitions. [2022-11-02 21:05:15,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 202.9375) internal successors, (3247), 16 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 258.0) internal successors, (4386), 17 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,125 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 258.0) internal successors, (4386), 17 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,125 INFO L175 Difference]: Start difference. First operand has 336 places, 303 transitions, 1268 flow. Second operand 16 states and 3247 transitions. [2022-11-02 21:05:15,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 477 transitions, 2780 flow [2022-11-02 21:05:15,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 477 transitions, 2713 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-02 21:05:15,673 INFO L231 Difference]: Finished difference. Result has 352 places, 428 transitions, 2434 flow [2022-11-02 21:05:15,674 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2434, PETRI_PLACES=352, PETRI_TRANSITIONS=428} [2022-11-02 21:05:15,674 INFO L287 CegarLoopForPetriNet]: 233 programPoint places, 119 predicate places. [2022-11-02 21:05:15,675 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 428 transitions, 2434 flow [2022-11-02 21:05:15,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.7) internal successors, (1957), 10 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:15,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:05:15,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:15,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:15,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:05:15,882 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:05:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1369574976, now seen corresponding path program 2 times [2022-11-02 21:05:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:15,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720065633] [2022-11-02 21:05:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:05:17,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720065633] [2022-11-02 21:05:17,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720065633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235499850] [2022-11-02 21:05:17,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:17,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:17,116 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bc65808-f4b9-4e01-a45d-a1a411e8617e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:05:17,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:17,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 21:05:17,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:17,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 21:05:18,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:05:18,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 21:05:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:05:18,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:18,835 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_408 (Array Int Int)) (~a1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408))) (let ((.cse2 (select .cse3 ~a1~0.base)) (.cse0 (select .cse3 c_~a2~0.base))) (or (not (let ((.cse1 (* |c_thread1Thread1of1ForFork1_~i~0#1| 4))) (= (select .cse0 (+ .cse1 c_~a2~0.offset)) (select .cse2 (+ .cse1 c_~a1~0.offset))))) (= (select .cse2 c_~a1~0.offset) (select .cse0 c_~a2~0.offset)))))) is different from false [2022-11-02 21:05:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-11-02 21:05:18,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235499850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:18,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:18,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 50 [2022-11-02 21:05:18,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613016292] [2022-11-02 21:05:18,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:05:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:05:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2139, Unknown=1, NotChecked=94, Total=2450 [2022-11-02 21:05:18,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 258 [2022-11-02 21:05:18,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 428 transitions, 2434 flow. Second operand has 50 states, 50 states have (on average 165.38) internal successors, (8269), 50 states have internal predecessors, (8269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:05:18,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 258 [2022-11-02 21:05:18,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand